公开(公告)号：EP3337035A1

公开(公告)日：2018-06-20

申请号：EP16306705.1

申请日：2016-12-16

申请人： NXP USA, Inc.

发明人： Blednov, Igor

IPC分类号： H03F1/02 ,  H03F3/195 ,  H03F3/21 ,  H03F3/213 ,  H03F3/60 ,  H03F1/56

CPC分类号： H03F1/0288 ,  H01L23/66 ,  H01L2223/6655 ,  H03F1/565 ,  H03F3/195 ,  H03F3/211 ,  H03F3/213 ,  H03F3/60 ,  H03F3/601 ,  H03F3/604 ,  H03F2200/108 ,  H03F2200/165 ,  H03F2200/168 ,  H03F2200/171 ,  H03F2200/222 ,  H03F2200/225 ,  H03F2200/297 ,  H03F2200/301 ,  H03F2200/318 ,  H03F2200/387 ,  H03F2200/391 ,  H03F2200/411 ,  H03F2200/42 ,  H03F2200/432 ,  H03F2200/451 ,  H03F2200/48 ,  H03F2200/54 ,  H03F2200/75

摘要： A device includes a substrate and a package input terminal. The device includes a driver amplifier mounted to the substrate and configured to receive a radio frequency input signal. A first amplifier is mounted to the substrate. The first amplifier includes a first amplifier input terminal. A second amplifier is mounted to the substrate. The second amplifier includes a second amplifier input terminal. An inter-stage network is connected between the driver amplifier and the first amplifier and between the driver amplifier and the second amplifier. The inter-stage network includes a first capacitor connected between the driver amplifier and the first amplifier input terminal, and an inductor having a first terminal and a second terminal. The first terminal of the inductor is connected to the first capacitor. The inter-stage network includes a second capacitor connected between the second terminal of the inductor and the second amplifier input terminal.

公开(公告)号：EP3255790A1

公开(公告)日：2017-12-13

申请号：EP17161108.0

申请日：2017-03-15

申请人： Biosense Webster (Israel), Ltd.

发明人： LEVIN, Michael

IPC分类号： H03F3/08

CPC分类号： H04B10/802 ,  H03F3/085 ,  H03F3/45 ,  H03F2200/171 ,  H03F2200/264 ,  H03F2200/375

摘要： An electronic circuit includes an isolation amplifier, having a first input terminal receiving an AC-signal and including a linear opto-isolator. The opto-isolator has a first output terminal that provides a unipolar signal having an AC-component proportional to the input signal. The circuit includes a transimpedance receiver with first and second operational amplifiers. The first amplifier has a second output terminal and first and second differential input terminals, with the first differential input terminal receiving and amplifying the unipolar output signal from the first output terminal providing an output signal from the circuit at the second output terminal. The second amplifier is configured as an integrator, having a third output terminal coupled to the second differential input terminal and having third and fourth differential input terminals, with the third differential input terminal receiving the output signal from the second output terminal and the fourth differential input terminal connected to ground.

摘要翻译： 一种电子电路包括隔离放大器，具有接收AC信号并包括线性光隔离器的第一输入端子。 光隔离器具有提供具有与输入信号成比例的AC分量的单极信号的第一输出端子。 该电路包括具有第一和第二运算放大器的互阻抗接收器。 第一放大器具有第二输出端子以及第一差分输入端子和第二差分输入端子，其中第一差分输入端子接收并放大来自第一输出端子的单极输出信号，以提供来自第二输出端子处的电路的输出信号。 第二放大器被配置为积分器，其具有耦合到第二差分输入端子并且具有第三差分输入端子和第四差分输入端子的第三输出端子，其中第三差分输入端子接收来自第二输出端子的输出信号和第四差分输入端子 终端连接到地面。

公开(公告)号：EP3254367A1

公开(公告)日：2017-12-13

申请号：EP16702430.6

申请日：2016-02-02

申请人： Drayson Technologies (Europe) Limited

发明人： ALDHAHER, Samer ,  PINUELA RANGEL, Manuel ,  MITCHESON, Paul David ,  YATES, David Christopher

IPC分类号： H02M7/537 ,  H02M7/5383 ,  H03F3/217 ,  H02M3/335 ,  H02J5/00 ,  H02M7/48

CPC分类号： H02M7/537 ,  H02J50/12 ,  H02M3/335 ,  H02M2001/0058 ,  H02M2007/4815 ,  H03F3/2171 ,  H03F3/2176 ,  H03F2200/171 ,  H03F2200/267 ,  H03F2200/391 ,  H03F2203/21157 ,  Y02B70/1433 ,  Y02B70/1441 ,  Y02B70/1491

摘要： An inverter for inductive power transfer is disclosed. The inverter comprises a first inductor and a switching element in series between power supply terminals, the switching element being operable to be switched at a first frequency; a first capacitance in parallel with the switching element between the first inductor and a power supply terminal; a first tank circuit in parallel with the first capacitance, the first tank circuit comprising a second inductor and a second capacitance, wherein the second capacitance is arranged in series with the second inductor; a second tank circuit in parallel with the first capacitance; and a third capacitance in series with the first inductor between the first tank circuit and the second tank circuit, wherein the second tank circuit comprises a transmitter coil and a fourth capacitance, the fourth capacitance being arranged in parallel or series with the transmitter coil; wherein the fourth capacitance is selected such that the resonant frequency of the second tank circuit is not equal to the first frequency, and wherein the second inductor and the second capacitance are selected such that the resonant frequency of the first tank circuit is an integer multiple, greater than one, of the first frequency.

公开(公告)号：EP3236585A1

公开(公告)日：2017-10-25

申请号：EP16166615.1

申请日：2016-04-22

申请人： NXP B.V.

发明人： Splithof, Mike

IPC分类号： H03F3/393 ,  H03F3/187 ,  H03F3/45 ,  H03F1/22 ,  H03F1/26

CPC分类号： H03F3/393 ,  H03F1/26 ,  H03F3/185 ,  H03F3/187 ,  H03F3/45179 ,  H03F3/45475 ,  H03F3/4565 ,  H03F2200/03 ,  H03F2200/165 ,  H03F2200/171 ,  H03F2200/301 ,  H03F2200/372 ,  H03F2200/375 ,  H03F2200/72 ,  H03F2203/45008 ,  H03F2203/45074 ,  H03F2203/45088 ,  H03F2203/45134 ,  H03F2203/45136 ,  H03F2203/45138 ,  H03F2203/45178 ,  H03F2203/45201 ,  H03F2203/45212 ,  H03F2203/45394 ,  H03F2203/45418 ,  H03F2203/45424 ,  H03F2203/45434 ,  H03F2203/45638 ,  H03F2203/45682 ,  H03F2203/45702 ,  H03F2203/45714 ,  H04R1/028 ,  H04R3/04 ,  H04R2499/11

摘要： A chopper amplifier and method of operation are described. The chopper amplifier comprises a first chopper arranged to modulate an input signal using a first chopper signal having a chopper frequency. An amplification stage has an input arranged to receive the chopped signal and an output, and supplies an amplified signal at the output. An output chopper is arranged to integrate the amplified signal using a second chopper signal having the chopper frequency to generate an amplified output signal. The amplification stage is further configured to filter the chopped signal to attenuate signal components having frequencies lower than the chopper frequency.

摘要翻译： 描述了斩波放大器和操作方法。 斩波放大器包括第一斩波器，其被设置为使用具有斩波器频率的第一斩波器信号来调制输入信号。 放大级具有用于接收斩波信号和输出的输入端，并且在输出端提供放大信号。 输出斩波器被安排为使用具有斩波器频率的第二斩波器信号来对放大的信号进行积分以生成放大的输出信号。 放大级进一步被配置为对斩波信号进行滤波以衰减频率低于斩波频率的信号分量。

公开(公告)号：EP3223427A1

公开(公告)日：2017-09-27

申请号：EP17162759.9

申请日：2017-03-24

申请人： YAMAHA CORPORATION

发明人： Togawa, Takeshi ,  Noro, Masao

IPC分类号： H03F3/217 ,  H03F1/32 ,  H03F3/181

CPC分类号： H03F3/2173 ,  H03F1/32 ,  H03F3/181 ,  H03F3/185 ,  H03F3/217 ,  H03F3/2171 ,  H03F2200/03 ,  H03F2200/171 ,  H03F2200/351 ,  H03F2200/78

摘要： A Bridge-Tied Load output self-oscillating class D amplifier includes a comparator receives an input signal from a signal input circuit at a second input terminal and outputs a positive-phase pulse width modulation signal and a reverse-phase pulse width modulation signal by comparing voltages of the two input terminal, first and second switching circuits power-amplifies the reverse-phase pulse width modulation signal and the positive-phase pulse width modulation signal, a first low-pass filter extracts a first output signal from the reverse-phase pulse width modulation signal, a second low-pass filter extracts a second output signal from the positive-phase pulse width modulation signal, a subtractor calculates a difference between the first and second output signals and output a difference signal, and a first feedback circuit feeds back the difference signal to the second input terminal of the comparator.

摘要翻译： 桥接式负载输出自激振荡D类放大器包括比较器，其接收来自第二输入端子处的信号输入电路的输入信号，并通过比较来输出正相脉宽调制信号和反相脉宽调制信号 两个输入端的电压，第一和第二开关电路对反相脉宽调制信号和正相脉宽调制信号进行功率放大，第一低通滤波器从反相脉冲中提取第一输出信号 第二低通滤波器从正相脉宽调制信号中提取第二输出信号，减法器计算第一和第二输出信号之间的差值并输出差值信号，第一反馈电路反馈 差分信号送至比较器的第二输入端。

公开(公告)号：EP2915250B1

公开(公告)日：2017-05-10

申请号：EP13851200.9

申请日：2013-10-18

申请人： ETA Devices, Inc.

发明人： BRIFFA, Mark, A. ,  DAWSON, Joel, L. ,  DEROO, John, E. ,  KOMONI, Krenar ,  PERREAULT, David, J. ,  UYAR, Oguzhan

IPC分类号： H04B1/04

CPC分类号： H04B1/0475 ,  H03F1/02 ,  H03F1/0211 ,  H03F1/0216 ,  H03F1/0227 ,  H03F3/19 ,  H03F3/21 ,  H03F3/211 ,  H03F3/24 ,  H03F3/245 ,  H03F2200/171 ,  H03F2200/451 ,  H03F2200/504 ,  H03F2200/511 ,  H03F2203/21106 ,  H03G3/3042 ,  H04B1/04 ,  H04B1/0483 ,  H04B2001/0416 ,  H04B2001/0425 ,  H04B2001/045

摘要： A radio frequency (RF) power amplifier system or transmitter includes one or more power amplifiers and a controller that is configured to adjust amplitudes and phases of RF input signals of the one or more power amplifiers and supply voltages applied to the one or more power amplifiers. In embodiments where multiple power amplifiers are used, a combiner may be provided to combine outputs of the power amplifiers.

摘要翻译： 射频（RF）功率放大器系统或发射器包括一个或多个功率放大器和控制器，该控制器被配置为调整一个或多个功率放大器的RF输入信号的幅度和相位，并且将施加到一个或多个功率放大器的电压 。 在使用多个功率放大器的实施例中，可以提供组合器来组合功率放大器的输出。

公开(公告)号：EP3151026A1

公开(公告)日：2017-04-05

申请号：EP15799687.7

申请日：2015-05-12

申请人： Shanghai Chenguang Medical Technologies Co., Ltd.

发明人： ZHANG, Songtao ,  WANG, Hao

IPC分类号： G01R33/36

CPC分类号： G01R33/3614 ,  G01R33/34092 ,  G01R33/3621 ,  H03F1/565 ,  H03F3/189 ,  H03F2200/171 ,  H03F2200/387 ,  H03F2200/451 ,  H03H9/46

摘要： Disclosed is a pre-amplifier for a magnetic resonance imaging radio-frequency coil in the field of magnetic resonance imaging. The pre-amplifier comprises an input matching circuit, an amplification circuit, an output matching circuit and a narrow band filter used for filtering a magnetic resonance signal amplified by the amplification circuit. The pre-amplifier has the technical effect of the pre-amplifier for the magnetic resonance imaging radio-frequency coil generating the gain required for magnetic resonance imaging within an extremely narrow range near a magnetic resonance signal frequency point, but only generating an extremely small gain or having no amplification function at all at other frequency points, thereby significantly reducing the probability of oscillation of the magnetic resonance imaging radio-frequency coil. Further provided is a pre-amplifier for a magnetic resonance imaging radio-frequency coil, which can achieve the technical effect, comprising an input matching circuit, a first-level amplification circuit, a narrow band filter circuit, a second-level amplification circuit, and an output matching circuit.

摘要翻译： 公开了磁共振成像领域的磁共振成像射频线圈的前置放大器。 前置放大器包括输入匹配电路，放大电路，输出匹配电路和用于滤波由放大电路放大的磁共振信号的窄带滤波器。 前置放大器具有用于磁共振成像射频线圈的前置放大器的技术效果，其在磁共振信号频率点附近产生在非常窄范围内的磁共振成像所需的增益，但是仅产生非常小的增益 或者在其他频率点完全没有放大功能，从而显着降低磁共振成像射频线圈的振荡概率。 还提供了一种用于磁共振成像射频线圈的前置放大器，其可以实现技术效果，包括输入匹配电路，第一级放大电路，窄带滤波器电路，第二级放大电路， 和输出匹配电路。

公开(公告)号：EP3110004A4

公开(公告)日：2017-03-01

申请号：EP14883059

申请日：2014-11-26

申请人： PANASONIC IP MAN CO LTD

发明人： IWATA KAZUYA

IPC分类号： H03F3/217 ,  G10L21/0208 ,  H03F1/32 ,  H03F1/34 ,  H03F3/181 ,  H03F3/183 ,  H04R3/04

CPC分类号： H04R3/04 ,  G10L21/0208 ,  H03F1/34 ,  H03F3/183 ,  H03F3/217 ,  H03F3/2171 ,  H03F3/2173 ,  H03F3/2175 ,  H03F2200/03 ,  H03F2200/171 ,  H03F2200/331 ,  H03F2200/351 ,  H03F2200/432

摘要： An audio signal amplification device of the disclosure includes: a delta-sigma modulation part configured to resample an input digital audio signal with a quantization number smaller than a quantization number of the digital audio signal; a pulse-width modulation part configured to convert an output signal from the delta-sigma modulation part into a pulse-width modulation signal which sets a gradation of the output signal in an amplitude direction at a gradation of a pulse width; a power amplification part configured to perform power amplification on an output signal from the pulse-width modulation part; a low-pass filter configured to diminish a component higher than a predetermined cutoff frequency, in an output signal from the power amplification part, and to output the resultant signal; and a correction processing part configured to generate a correction signal for correcting the digital audio signal. The correction processing part includes a switch configured to control coupling of the correction processing part to the low-pass filter. When the switch is on, the correction processing part couples a loudspeaker to the low-pass filter, and generates the correction signal.

摘要翻译： 本发明的音频信号放大设备包括：三角积分调制部分，被配置为以比数字音频信号的量化数小的量化数重采样输入的数字音频信号; 脉冲宽度调制部分，其被配置为将来自所述德耳塔西格玛调制部分的输出信号转换成脉冲宽度调制信号，所述脉冲宽度调制信号将所述输出信号的灰度在幅度方向上设置为脉冲宽度的灰度; 功率放大部件，被配置为对来自所述脉冲宽度调制部件的输出信号执行功率放大; 低通滤波器，其被配置为在来自所述功率放大部件的输出信号中减小高于预定截止频率的分量，并且输出结果信号; 以及校正处理部分，被配置为生成用于校正数字音频信号的校正信号。 校正处理部分包括被配置为控制校正处理部分与低通滤波器的耦合的开关。 当开关接通时，校正处理部分将扬声器耦合到低通滤波器，并产生校正信号。

公开(公告)号：EP3133735A1

公开(公告)日：2017-02-22

申请号：EP16182864.5

申请日：2016-08-04

申请人： NXP USA, Inc.

发明人： Jones, Jeffrey K.

IPC分类号： H03F3/195 ,  H03F3/21 ,  H03F3/213 ,  H03F1/02 ,  H03F1/56 ,  H01L23/498 ,  H01L21/48 ,  H01L49/02

CPC分类号： H03F3/195 ,  H01F2017/0073 ,  H01F2017/0086 ,  H01L21/486 ,  H01L23/3677 ,  H01L23/481 ,  H01L23/49568 ,  H01L23/49827 ,  H03F1/0288 ,  H03F1/565 ,  H03F3/211 ,  H03F3/213 ,  H03F2200/108 ,  H03F2200/165 ,  H03F2200/171 ,  H03F2200/181 ,  H03F2200/216 ,  H03F2200/222 ,  H03F2200/225 ,  H03F2200/297 ,  H03F2200/301 ,  H03F2200/391 ,  H03F2200/42 ,  H03F2200/432 ,  H03F2200/451 ,  H03F2200/48 ,  H03F2200/75 ,  H03F2203/21103 ,  H03F2203/21106 ,  H03F2203/21112 ,  H03F2203/21139 ,  H03F2203/21142 ,  H03F2203/21157

摘要： An amplifier module includes a module substrate. Conductive interconnect structures and an amplifier device are coupled to a top surface of the module substrate. The interconnect structures partially cover the module substrate top surface to define conductor-less areas at the top surface. The amplifier device includes a semiconductor substrate, a transistor, a conductive feature coupled to a bottom surface of the semiconductor substrate and to at least one of the interconnect structures, and a filter circuit electrically coupled to the transistor. The conductive feature only partially covers the semiconductor substrate bottom surface to define a conductor-less region that spans a portion of the bottom surface. The conductor-less region is aligned with at least one of the conductor-less areas at the module substrate top surface. The filter circuit includes a passive component formed over a portion of the semiconductor substrate top surface that is directly opposite the conductor-less region.

摘要翻译： 放大器模块包括模块衬底。 导电互连结构和放大器装置耦合到模块基板的顶表面。 互连结构部分地覆盖模块衬底顶表面以限定顶表面处的无导体区域。 放大器装置包括半导体衬底，晶体管，耦合到半导体衬底的底表面和至少一个互连结构的导电特征，以及电耦合到晶体管的滤波器电路。 导电特征仅部分地覆盖半导体衬底底表面以限定跨越底表面的一部分的无导体区域。 无导体区域与模块衬底顶表面处的至少一个无导体区域对准。 滤波器电路包括形成在半导体衬底顶表面的与无导体区域直接相对的部分上的无源部件。

公开(公告)号：EP2792069B1

公开(公告)日：2016-11-02

申请号：EP12809960.3

申请日：2012-12-17

申请人： Analog Devices, Inc.

发明人： SAMUELS, Howard, R.

IPC分类号： H03F3/45 ,  H03F3/68 ,  G01P15/125 ,  G01P15/18

CPC分类号： H03F1/26 ,  G01P15/125 ,  G01P15/18 ,  G01P2015/082 ,  H03F3/04 ,  H03F3/45071 ,  H03F3/45475 ,  H03F3/68 ,  H03F2200/129 ,  H03F2200/171 ,  H03F2200/261 ,  H03F2200/333 ,  H03F2203/45512 ,  H03F2203/45544